nft-faucet/NftFaucet/wwwroot/appsettings.json

{
    "EthereumNetworks": [
        {
            "Id": "Ropsten",
            "Erc721ContractAddress": "0x71902F99902339d7ce1F994C12155f4350BCD226",
            "Erc1155ContractAddress": "0x6c0449f3B8135f896637afd29c7aeA496ED6f4F3"
        },
        {
            "Id": "PolygonMumbai",
            "Erc721ContractAddress": "0xeE8272220A0988279627714144Ff6981E204fbE4",
            "Erc1155ContractAddress": "0x2E6C3fa7B2Ed656e695A29276a22c8C33d118a1B"
        }
    ],
    "IpfsGateways": [
        {
            "Id": "IpfsOfficial",
            "BaseUrl": "https://ipfs.io/ipfs"
        },
        {
            "Id": "Infura",
            "BaseUrl": "https://ipfs.infura.io/ipfs"
        },
        {
            "Id": "NftStorage",
            "BaseUrl": "https://nftstorage.link/ipfs"
        },
        {
            "Id": "Crust",
            "BaseUrl": "https://gw.crustapps.net/ipfs"
        }
    ]
}